to help maintain security in the city. we're here to make sure the convention runs smoothly. >> reporter: security gets more intense in the heart of beijing. police squads patrol in and around tiananmen square. people heading into the famous site face three checks, including bag searches. the party convention will be summarizing the past ten years under president hu jintao. in the elaborate building you see behind me, the communist party is holding a retrospective exhibition. more than 2,000 photos and documents are on display. the pictures and words stress how president hu and his government struggled to make china better during the last decade of rapid economic growth. >> james, during the last decade, china has changed socially. people spread information through the internet, they question authority and complain about corruption. how would you describe the climate now that the congress is under way? >> reporter: gene, there's a feeling of tension here of authorities being on heightened alert. government officials are al